Getting Started Guide for HHT

Appendix A
Additional Ladder Program Exercises
Getting Started Guide
for HHT
A–9
13.Test your Ladder Program. Do the following:
A. Press pushbutton #0 for at least 10 seconds. During the first 10
seconds, output #0 turns ON and #1 stays OFF. The following display
appears:
<END>
F1 F2 F3 F4 F5
2.3.0.0.*
] [ (TON)
] [ ( )
] [ ( )
These bit instructions become bold.
RUN
MODE FORCE SEARCHEDT_DAT
B. After 10 seconds, output #0 turns OFF and output #1 turns ON. The
following screen appears:
<END>
F1 F2 F3 F4 F5
2.3.0.0.*
] [ (TON)
] [ ( )
] [ ( )
These bit instructions become bold.
RUN
MODE FORCE SEARCHEDT_DAT
C. Release pushbutton #0; the timer resets and both outputs #0 and #1
turn OFF.
D. Place the cursor on the
TON instruction (press the [→ ] key twice).
Press
[ZOOM]. The following screen appears:
ZOOM on TON –(TON)–
NAME: TIMER ON DELAY
TIMER: T4:0 TIME BASE .01 SEC
PRESET: 1000
ACCUM: 0
EN TT DN
000
F1 F2 F3 F4 F5
EDT_DAT
2.0.0.0.2
The accumulator value changes
In step (e).
Notice that the values for EN,
TT, and DN also change.
E. Repeat steps A, B and C. Watch the timer accumulator value change.